Fast Object Database for Java - with JPA/JDO support

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18

JDO @Index in JPA?

Hi! I have a project which has all entities as JPA entities. I would like to make use of indexing ... : will adding JDO @Index in a JPA entity have any effect or I have to switch that entity to JDO? Question2 ... the JDO annotation with JPA without any additional change. If you add an index to an existing entity
18

Can not have unique index on Byte Array

EKO FAJAR Unique is implemented by ObjectDB by an index that does not allow duplicate keys. An index ... are different. support Support Note also that an index on a collection or array will not be useful in ... . This is because every element is indexed as a separate index entry. support Support Ok. Thank you. For the explanation. BTW
18

Create simple index for a Id field

Hello, I just wanted to write another anotation to my key field so I can have a really simple index ... just want my key to be indexed on my db, just like this: @Entity public class ObjectDbEntity implements DataItemProvider {        @Id     @Index     private Key key = null
17

Index on values from a Map

Hi, is there a way to put an Index on the values from an Map? For example, if I have a Map like ... Indexes are used only in queries, and cannot accelerate other application code. You can define an index ... on map values should work. Hopefully indexes are used in this case (if not, it should probably be fixed). support Support
17

Search through collection for value using index

by a paticular user, since I will do this query often I would like to index it. How would I tell ObjectDB to make an index and then use it in a query? I have yet to deploy this entity so I ... You can define an index on a collection field as explained in the manual, and the index will be used
17

Partial Indexing

I have a question about partial indexing. For example, a field of String type ttt, will be distinguished by the first 5 characters, then I can make a index of substr(ttt,1,5) in MySQL. With ObjectDB ... only indexing of complete fields (single field or multiple fields). The obvious workaround is to add
17

"Rebuild Class Indexes" from the command line?

Hi, Is there a way to "Rebuild Class Indexes" from the command line? I have just added a new index ... . http://www.objectdb.com/database/jdo/manual/chapter9 Thanks EKK Emmanuel Keskes Rebuilding an index ... ObjectDB 2.x. Update: Starting ObjectDB 2.6.6 new indexes are automatically built and activated in the background. support Support
17

"is not null" queries not working with index

"is not null"-queries are not working correctly for indexed fields. Following SSCCE creates 1000 entities. A null value is assigned to an indexed field for every second entity. When doing count ... .annotations.Index; import javax.persistence.Entity; import javax.persistence.EntityManager; import javax
17

Indexes broken after schema update.

to pick up the new schema and now none of the indexes work, except the @Id. I can query by any field that is not indexed on the existing Object but as soon as I try and query against a field that was indexed I get no results. Tried 2.4.2 and 2.4.2_02 with same results. bensteele Ben Steele Adding new
17

Internal Exception and Index Problems

object in field userName is not synchronized with the index on that field. It is unclear ... . However it is very easy to fix the index by running the Doctor in repair mode: > java com.objectdb.Doctor error ... by the server when an object is indexed. We were aware to issues that are caused by schema changes

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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